foojay.io - Friends Of OpenJDK

• 2 Nov AI DevCon NYC

  Virtual Java User Group 34 35th St, USA 00:00

• 2–6 Nov W-JAX

  Conference Munich

• 2–6 Nov OCX Webinar Week 2026

  Webinar Online

• 2 Nov Technical documentation in the times of AI Agents: is it still needed?

  Java User Group München (JUGM) Eden Hotel Wolff, München 19:00

• 3 Nov XtremeJ Online Conference

  Conference Online

• 3 Nov Monatlicher Stammtisch der JUG Berlin-Brandenburg

  Java Usergroup Berlin-Brandenburg Da Vinci, Berlin 18:30

• 3 Nov Next-level AI Concepts for Devs: Agents, Tools, and MCP

  Orlando JUG (Java User Group) DPAC 108, Orlando 18:30

• 4–5 Nov Devoxx Morocco

  Conference Casablanca

• 4–6 Nov Øredev

  Conference Malmö

• 4 Nov Next-level AI: Upgrade your skills with agents, MCP, and more

  Tampa Java User Group Kforce, Tampa 17:30

• 5–6 Nov Heapcon

  Conference Belgrade

• 5 Nov Amsterdam JUG Meetup at Atlassian

  Amsterdam Java User Group Atlassian B.V., Amsterdam 18:00

• 5 Nov I Quit BDD Once. This Time the AI Writes the Glue

  JUG Oberpfalz Online 20:00

• 5 Nov ⚡️Présentations éclairs de la communauté / Lightning Talks

  Montréal JUG - La communauté Java de Montréal Maplr, Montréal 17:30

• 7 Nov Going to DevFest Vienna

  Java Vienna Vienna 09:00

• 7 Nov JUG DA: Global Day of Code Retreat Frankfurt

  Java User Group Darmstadt ING, Frankfurt am Main 09:00

• 9 Nov From JDBC to Database Control Planes: 30 Years of Java Database Connectivity by Rogerio Robetti

  Virtual Java User Group Online 20:00

• 10 Nov Porto Tech Hub

  Conference Porto

• 9 Nov Bootiful Spring Security

  St. Louis Java User's Group United States 18:30

• 10 Nov November 2026: Kotlin-Powered Spring Boot and the Security of LLMs

  JUG Noord Dienst Uitvoering Onderwijs (DUO)-IB-Groep, Groningen 17:00

• 11–12 Nov J-Fall

  Conference Ede

• 11 Nov Utrecht JUG Meetup – Nov 11: Java Security & Agentic AI in Legacy Modernization

  Utrecht Java User Group PSG technauts Nieuwegein, Nieuwegein 17:30

• 11 Nov Neuerungen in Java und Open Source Finanzierung

  Java User Group Dortmund SIGNAL IDUNA Gruppe Hauptverwaltung Dortmund, Dortmund 18:00

• 11 Nov JUGO - TBD - save the date

  JUG Oberpfalz Online 18:00

• 11 Nov From Code to Context – Wie KI Softwaresysteme wirklich verstehen kann

  Java User Group Karlsruhe 1000 Satellites Karlsruhe-Malzwerk, Karlsruhe 18:30

• 12 Nov Mit Java, ohne kommerzielle LLMs, KI Aufgaben erkennen und lösen

  Java User Group Hamburg Consid GmbH, Hamburg 19:00

• 12 Nov LJC Meetup at Capital One

  LJC - London Java Community Capital One, London 18:00

• 12 Nov Java 26 and 27 in the Trenches: New Features and the Art of Staying Current

  Boston Java Users ACM Chapter (formerly NEJUG) RJ Kelly, Burlington 18:00

• 14 Nov Global Day of Coderetreat

  Java User Group Bielefeld klose brothers GmbH, Bielefeld 08:30

• 16 Nov November Meetup

  Java Vienna Vienna 18:00

• 16 Nov JUG BB: Pre-SAG Special @ JetBrains with Chris Richardson

  Java Usergroup Berlin-Brandenburg JetBrains GmbH, Berlin 18:30

1. Install Java

   One-time setup to get Java on your machine: check whether you already have it, then install it on Windows, macOS or Linux.

   • Check your Java installation
   • Find Another Java Version
   • Install Java on Linux
   • Install Java on MacOS
   • Install Java on Windows

2. Quick Start Tutorial

   Java Quick Start Tutorial: A high-speed introduction to Java in single source files: no project, no build tool, just java HelloWorld.java and go.

   Under 29 minutes in total

   1. Choosing an Editor
   2. Hello World!
   3. Using Arguments and String Arrays
   4. Working with Numbers
   5. If, Then, Else
   6. Enum and Switch
   7. Using Methods
   8. Using Objects
   9. Reading a Text File
   10. Using Streams
   11. What's Next?

Done, or want another voice? 6 more free Java courses and tutorials, picked by the community.